Home / 1,085.20-1,497.56-619.36

Finding the Fourth Proportional to 1,085.20, 1,497.56 and 619.36

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Solution

The fourth proportional to 1,085.20, 1,497.56 and 619.36 is: 854.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085.20 : 1,497.56 = 619.36 : x
  2. Step 2: Convert to fraction form
    1,085.20/1,497.56 = 619.36/x
  3. Step 3: Cross multiply
    1,085.20x = 1,497.56 × 619.36
  4. Step 4: Simplify right side
    1,085.20x = 927,528.76
  5. Step 5: Solve for x
    x = 927,528.76/1,085.20
  6. Step 6: Final answer
    x = 854.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.